The phrase "channel line" refers to a line or pathway that is used to transmit information or signals. It can be a physical wire or cable, or even a virtual pathway over which data is sent from one place to another. Full definition
Each Organ - Chip, which is composed of a clear flexible polymer, is about the size of a AA battery and contains tiny hollow channels lined with living cells. (emulatebio.com)
Key support levels for SPY include the convergence of the 20 and 50 day moving averages ($ 134.00 to $ 134.40), the lower trend channel line near $ 133.20, the June 25th swing low ($ 130.85), the 200 - day MA ($ 130.52) and the June 4th swing low of $ 127.14. (morpheustrading.com)